Japan Flora: Rhizomes rather slender, 2-3 mm. across, long-creeping, densely scaly, the scales brown, mem­branous, spreading, ovate, 2-3 mm. long, abruptly contracted to a short filiform point; stipes rather short, 3-6 cm. long, straw-colored, glabrous on upper portion, slightly scaly at base; blades chartaceous to herbaceous, narrowly ovate to broadly lanceolate, 5-20 cm. long, 2.5-8 cm. wide, usually slighdy narrowed at base, glabrous on upper side, sparsely crisped-pubescent beneath, pinnately parted, the rachis raised on both sides; segments 15-25 pairs, horizontally spreading, linear-lanceolate to broadly linear, 3-5 mm. wide, obtuse to subacute, usually obsoletely crenate toward the apex, the costas slender, slightly raised on both sides, the veins not visible; sori orbicular, medial. Tree-trunks and rocks in mountains.

Hokkaido, Honshu, Shikoku, Kyushu, rather rare. s. Ku­riles and Korea (Quelpaert Isl).